What is the cause of the dry leaf tips of azaleas 10

Rhododendron leaf tips dry up for the following reasons, and treatment can be done.

1. Dry yellow. The yellow of lack of water is different from the yellow of water, the yellow of lack of water is the withering and dry leaf tips or edges, and the old leaves are withered and yellow from the bottom to the top, but the growth of new leaves is relatively normal. Pay attention to watering when watering enough, water thoroughly.

Second, lack of fat yellow.

It is manifested in the color of young leaves becoming lighter, yellow or light green, while old leaves are more normal or gradually turning from green to yellow. It is necessary to check the potting soil frequently, if there is a dry knot phenomenon, the soil should be replaced, and the thin fertilizer should be applied diligently, and some alum water should be poured in a timely manner to replenish iron.

Third, the lack of light yellow.

If the leaves are shaded for a long time, the leaves will not get enough sunlight to form chlorophyll, and the whole leaves will turn yellow and then fall off, and this disease can be avoided by supplementing light.

Fourth, fat yellow. The yellowing of flowers caused by excessive fertilization or excessive concentration is manifested in dry brown at the top of the new leaves, and the general leaf surface is thick and dull, and the concave and convex are not stretched, and the old leaves are scorched and yellow. Fertilization should be stopped immediately, and part of the fertilizer should be washed with plenty of washing in severe cases.

Fifth, burn yellow. Strong sunlight directly onto some shade-loving flowers (such as spider plants, hostas, etc.) is easy to cause the leaf tips and leaf margins of flowers to wither, and the sunny part of the leaves to appear yellow spots. Move to the pubic area.

Sixth, water yellow. The young leaves are dark yellow and dull, the old leaves have no obvious changes, the branches are small yellow-green, and the new shoots are shrunk and not long, indicating excessive watering. Depot the flowers, put them in a ventilated and cool shade, and dry the soil ball before putting them back into the pot.

The azalea leaves dry up and fall off, probably due to these "details" not being done well.

1. Improper potting soilRhododendron likes to grow in slightly acidic loose soil, if the potting soil is alkaline or long-term watering is alkaline, it will directly affect the absorption of nitrogen, iron and other elements by the roots, resulting in iron deficiency in plants and causing leaf dryness. Solution: In order to prevent the leaves from drying out due to iron deficiency, you can water them with ferrous sulfate water every day, so that the leaves will not turn yellow or even dry up and fall off.

In addition, you can also add a few drops of edible rice vinegar to the water when watering the flowers, which can also increase the acidity of the soil. 2. The temperature is not suitable for the rhododendron, because it is not cold-tolerant, the temperature in winter is too low, and it is easy to dry up the leaves until they die. When the temperature is too high, the transpiration of the rhododendrons is excessive, and the water and nutrients in the roots are in short supply, which will also dry out the leaves.

Solution: After leaving the house in spring, the sunlight is softer, and the azaleas should be properly shaded around noon. In summer, the azaleas should be placed in a ventilated and cool place, and reed curtains, bamboo curtains, and sunshade nets should be used to shade in the hot summer.

In autumn, the intensity of daylight gradually eases, and the azaleas can see more sunlight before 9 a.m. and after 5 p.m. In winter, the room temperature should be around 10. 3. Improper wateringWhen watering the azalea too much, the potting soil is too wet for a long time, resulting in a lack of oxygen in the soil, causing the decay of some fibrous roots in the high destruction, hindering normal respiration and absorption of water nutrients, and causing the leaves to dry up and fall off.

After being damaged, the young leaves first turn yellow, and finally dry up. Solution: Watering time should be in the morning and evening, especially in the hot summer, it is not suitable to water at noon.

In spring and autumn, it can be watered once every 2-3 days, and in the case of yellow plum days or rainy days, watering should be stopped and the water in the pot should be discharged in time. After October, the pots should be lowered as appropriate, and the potting soil should be kept slightly moist. 4. Improper fertilizationIf the azalea is fertilized too much, it will lead to the new leaves being hypertrophied, and more uneven, and the old leaves will dry up and fall.

If less fertilization is available, it will lead to a lack of nutrients, resulting in thin branches and leaves, and finally gradually drying up. Solution: When the fertilizer is too much, stop the fertilization immediately, increase the amount of watering, so that the fertilizer flows out of the drainage hole at the bottom of the pot, or immediately pour the pot, rinse the soil with water and then replant it into the pot.

If the fertilization is too little, the fertilization can be increased appropriately, and attention should not be caused by the fertilizer.

The main reason for the drying up of rhododendron leaves is that the air humidity is too low.

Rhododendron likes sunlight, but also afraid of strong direct light, shade tolerant, the growth environment is generally semi-shaded, summer high temperature period, the sun is also strong, need to be dormant maintenance, placed in a semi-shaded and ventilated place, increase air humidity, potting soil dry and wet alternately, not too wet or dry; During the growing season, it is necessary to keep the potting soil moist, and it is easy to fall leaves when it is dry, and it affects the growth and development.

In summer, due to high temperatures, try not to fertilize, and it is not too late to fertilize in autumn when the weather turns cooler. Fertilization is based on the principle of thin fertilizer and diligent application, and it is not possible to be greedy, otherwise it is difficult to damage fertilizer.

Because the rhododendron likes a humid environment, there can be a breeze in the environment, but it must not be placed at the tuyere of the wind, otherwise too much water will be lost, and the leaves will dry up.

There is a severe shortage of water, and more watering will ease it.

Rhododendron bai flowers shed leaves often care du

Improper causes, usually caused by temperature and humidity.

degree, light, water and fertilizer are not appropriate.

1. The temperature and humidity are not suitable. Prevent.

The cuckoo flower is suitable for growing at a temperature of 15-30 years, and the humidity requirement is above 60%. In addition, the environment is not suitable for the growth of rhododendrons, and leaf loss is normal.

Adjust the temperature and humidity of the environment by adjusting the light, watering and other means to keep it in an environment suitable for the growth of rhododendrons.

2. Long-term lack of light. If the azaleas are left in a dark corner for a long time, the leaves will easily wither and fall off. Although rhododendrons love shade, they also need normal photosynthesis to grow, so get enough light.

Move the azaleas to a sunny area and wait until the weather warms up in spring and summer before moving to a semi-shaded area.

3. Improper water and fertilizer. Excessive drought, water accumulation in pots, and too much fertilization can all cause rhododendrons to lose their leaves.

Rhododendron is a fibrous root system, drought tolerance is poor, and it must be watered in time during planting, but it is also necessary to pay attention not to water too much, an appropriate amount can be, if there is stagnant water, pour out or replace the potting soil in time.